Pool skimmer basket system

ABSTRACT

The present invention relates to apparatuses for improving pool skimmers. In some embodiments, the apparatus is a pool skimmer basket system that includes a skimmer basket, a first tube that is attached to the skimmer basket, and a second tube that is adjacent to and rotatable relative to the first tube. The first tube includes a longitudinal slot that feeds water into the skimmer basket. Without being bound by any particular theory, it is believed that the slot increases the velocity of water flowing into the basket and that the system increases the debris-holding capacity and allows one to avoid having to reach through dirty water to remove the skimmer basket.

RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/682,516, filed Aug. 21, 2017, which is a continuation of U.S. patentapplication Ser. No. 15/021,128, filed Mar. 10, 2016, which is anational stage application of International Patent ApplicationPCT/US14/31757, filed Mar. 25, 2014, which is a continuation-in-part ofU.S. patent application Ser. No. 14/023,415, filed Sep. 10, 2013, nowU.S. Pat. No. 8,721,881. All of the aforementioned are incorporated byreference in their entirety.

BACKGROUND Technical Field

The present invention relates to apparatuses for improving the operationof pool skimmers, particularly those used in swimming pools, and methodsof using the same.

Background of the Invention

With reference to FIGS. 1-3, in the prior art, it is known to removedebris in swimming pools 110 through the use of skimmers 100. Skimmers100 generally include a rectangular skimmer opening 135 located in asidewall 120 of the swimming pool 110, a movable weir 170 that pivots ona hinge 155 within the skimmer 100 and moves in response to changes inthe water levels of the swimming pool 110, and a skimmer basket 160. Theskimmer basket 160 sits in a well 198 located in the interior 137 of theskimmer 100, collects debris and must be emptied.

Water enters the skimmer 100 through the opening 135, flows throughwater passageway 196 and over the weir 170, and through the skimmerbasket 160. Ultimately, the filtered water is then pumped back into theswimming pool 110 through water jets 175 located in the pool sidewalls120 using a pump 190 and a series of pipes 180, 181, 182 and 193. Thecapacity of pool pumps 190 is usually provided in gallons per minute(gpm), which refers to the amount of water that the pump 190 is able tocirculate in a minute. The pump 190 is usually connected to a pool drain195 in addition to the skimmer 100, and in some cases the pool owner isable to adjust the rate at which the pump 190 pulls water into theskimmer 100 by closing the drain valve 194. However, closing the drainvalve 194 requires manual intervention by the pool owner.

Unfortunately, swimming pool skimmers 100 have a number of problems.First, skimmer baskets 160 fill up quickly, particularly in residentialareas with many trees. Thus, skimmer baskets 160 are a constantmaintenance issue. Second, skimmer baskets 160 are often located morethan six inches below the top access opening 197 to the skimmer 100,which means that the pool owner has to clip his or her hands into dirtywater to reach the skimmer basket 160. This is particularly unappealingsince creatures like snails and spiders are attracted to skimmers 110.Third, many swimming pool pumps 190 lack sufficient suction force due tosafety requirements such as the Virginia Graeme Baker Pool and SpaSafety Act in the United States. Consequently, too often debris water issucked into the skimmer 100 at too low of a rate, leaving the pool 110dirty. Finally, skimmer baskets 160 are often provided with a plastichandle 166 so that they may be emptied. However, when a large amount ofwater-logged, heavy debris is located above the handle 166, the pump 190sucks the water-logged debris against the handle 166, leading the handle166 to snap (break). This is especially problematic in the case of cheapplastic baskets 160 with weak handles 166.

Attempts have been made in the prior art to address some of theseissues. For example, U.S. Pat. No. 8,202,416 teaches a diverter platethat replaces the existing weir 170 and consists of two parts that moveinto the skimmer 100. Although the diverter plate of the '416 patentclaims to increase suction power, it does nothing to address the lack ofcapacity of the skimmer basket 160, the fact that a pool owner has todip his or her hands into dirty water to remove the skimmer basket 160,or breakage of basket handles 166.

U.S. Pat. No. 5,830,350 teaches a vented tower that extends from thefloor 161 of the skimmer basket 160 and seeks to address a particularproblem associated with the skimmer basket 160, namely, the basket 160being sucked to the skimmer well 198 by the pump 190. The '350 patentdoes nothing to address the small capacity of the skimmer basket 160, asthe vents in the tower are air vents. The '350 patent also does notaddress the flow rate of water into the basket 160.

Skimmer baskets with floating weirs have also been developed, asdescribed in for example U.S. Pat. Nos. 6,716,342 and 4,325,150. Thesebaskets are designed to prevent water from flowing back into the pool110 from the skimmer 100 and are not designed to increase basket 160capacity, make the basket 160 easier to grab, or to increase thevelocity of water and debris entering the basket 160.

Finally, U.S. Pat. No. 4,737,279 (“the '279 patent”) teaches anapparatus that sits on top of a skimmer basket and has two flow paths,one via a coupling for a suction hose and the other via a weir-gatedenclosure carried by the basket closure. The '279 patent does not teachor suggest a system that has an inner and outer tube that are attachedto a skimmer basket. The '279 patent also teaches that the properposition of the apparatus is the position in which the open weir gatedside of the enclosure faces toward the skimmer throat. See Column 8,Lines 37-40; FIG. 1.

Thus, there is a need for cheap and safe devices that improve theoperation of swimming pool skimmers.

BRIEF SUMMARY

The present invention relates to apparatuses for improving poolskimmers. In some embodiments, the apparatus is a pool skimmer basketsystem that includes a skimmer basket, a first tube, and a second tube.More particularly, in some embodiments, the system includes a skimmerbasket, the skimmer basket configured to be placed in a pool skimmer andcomprising a basket interior, a basket exterior, a floor, a top/rim, aheight extending from the floor to the top/rim, a sidewall extendingupwardly from the floor, and a plurality of apertures located in atleast one of the basket sidewall and the floor (i.e., in the sidewalland/or floor), wherein the basket floor and the basket sidewall separatethe basket interior from the basket exterior; a first tube attached tothe skimmer basket, the first tube comprising a top, a bottom comprisingan opening, a first tube height extending from the bottom to the top, aninterior, an exterior comprising a first flange extending from the firsttube towards the basket sidewall, and a first tube slot configured tofeed water from the first tube exterior to the first tube interior andultimately the basket interior, the first tube slot located between thetop and the bottom of the first tube, the first tube slot having a widthperpendicular to the first tube height and a height parallel to thefirst tube height; and a second tube adjacent to the first tube androtatable relative to the first tube, the second tube comprising a top,a bottom, a second tube height extending from the bottom to the top, anda second tube slot located between the top and the bottom of the secondtube, the second tube slot having a width perpendicular to the secondtube height and a height parallel to the second tube height.

Optionally, the tops of the first and second tubes each compriseopenings. Optionally, the first tube is located inside the second tubeinterior. Optionally, the system further includes a pool, the poolcomprising a sidewall, the pool sidewall comprising a pool skimmer, thepool skimmer comprising a skimmer interior and a skimmer opening leadingfrom the pool to the skimmer interior and further wherein the basket islocated in the skimmer interior. Optionally, the widthwise center of thefirst tube slot is offset from the widthwise center of the skimmeropening by at least about 30 degrees. Optionally, the first flange andthe skimmer basket are permanently attached to each other. Optionally,the first flange and the skimmer basket are mechanically/removablyattached to each other. Optionally, the first flange is pivotallyattached to the skimmer basket by a hinge. Optionally, the first flangeis removably attached to the skimmer basket by a fastener. Optionally,the fastener is at least about 3 inches in length and comprises threads.Optionally, the first flange comprises a first fastener aperture and thefastener passes through the first fastener aperture. Optionally, thefirst fastener aperture substantially extends to an outer edge of thefirst flange. Optionally, the fastener passes through an aperture in thebasket. Optionally, the first flange and the basket comprise matingthreads for removably attaching the first flange to the basket.Optionally, the width of the first tube slot is at least about 1 inch,the width of the second tube slot is at least about 1 inch, the heightof the first tube slot is at least about 4 inches and the height of thesecond tube slot is at least about 4 inches. Optionally, the first tubeand the second tube are generally cylindrical. Optionally, the firsttube height is greater than the second tube height, the second tube islocated above the first flange and the first tube comprises an upperflange that extends about a circumference of the first tube, the upperflange located above the first flange and the second tube. Optionally,the first flange comprises a groove that is adjacent to the first tube,is located on the top surface of the first flange, and extends about aperimeter of the first tube, and the bottom of the second tube islocated in the groove. Optionally, the first tube slot comprises a topand a bottom, and the bottom of the first tube slot is adjacent to a topof the first flange. Optionally, the system further comprises a washerattached to the first flange, the washer comprising a washer opening influid communication with the first tube bottom aperture. Optionally, thewasher comprises a fastener slot configured to receive a fastener andthe washer extends beyond a perimeter of the first flange. Optionally,the first tube slot extends from the first flange to the top of thefirst tube. Optionally, the first tube is immobile relative to the firstflange and the basket. Optionally, the first tube, second tube, andfirst flange are comprised of plastic. Optionally, the width of thefirst tube slot is approximately equal to the width of the second tubeslot. For example, the width of the first tube slot may be between about90% and about 110% of the width of the second tube slot. Optionally, theinterior of the first tube is hollow. Optionally, the first tube islocated above the basket floor. Optionally, the height of the first tubeis different than the height of the second tube. Optionally, the secondtube comprises at least one additional aperture between the top and thebottom of the second tube, the at least one additional aperturegenerally opposite the second tube slot. Optionally, the first flange isadjacent to the top of the skimmer basket. Optionally, the first tubeextends above and below the first flange. Optionally, the first flangeis configured to inhibit (but not necessarily prevent) water fromentering the basket without first entering the slot of the first tube.Optionally, the first tube height is at least about 4 inches.Optionally, the bottom of the basket is substantially flat. Optionally,the first tube is configured to increase the velocity of water (e.g.,create a vortex) entering into the basket when the basket is placed in aswimming pool skimmer and the swimming pool skimmer is connected to apump.

Optionally, the system is provided as a kit that includes a first tube,the first tube comprising a top, a bottom comprising an opening, aheight extending from the bottom to the top, an interior, an exterior,an inner diameter perpendicular to the height, an outer diameterperpendicular to the height, a first tube slot having a width of atleast about 1 inch and a height of at least about 4 inches, the firsttube slot width parallel to the inner and outer diameters, the firsttube slot height perpendicular to the first tube inner and outerdiameters, the first tube exterior comprising a first flange extendingfrom the first tube, the first flange configured to attach to a skimmerbasket, at least one of the first tube (e.g., the wall forming the firsttube or a ledge extending from the interior surface of the wall) and thefirst flange comprising a plurality of fastener apertures for attachingthe first tube to a skimmer basket; and a second tube, the second tubecomprising a top, a bottom comprising a bottom aperture, a heightextending from the bottom to the top, an interior, an exterior, an innerdiameter perpendicular to said height, an outer diameter perpendicularto said height, and a second tube slot having a width of at least about1 inch and a height of at least about 4 inches, the second tube slotwidth parallel to the second tube inner and outer diameters, the secondtube slot height perpendicular to the second tube inner and outerdiameters. Optionally, the inner diameter of the first tube is differentthan the inner diameter of the second tube and the outer diameter of thefirst tube is different than the outer diameter of the second tube.Optionally, the inner diameter of the second tube is substantially equalto the outer diameter of the first tube so that when the second tube isplaced over the first tube, the second tube fits tightly on the firsttube. Optionally, the first flange comprises a groove adjacent to thefirst tube and extending about an outer circumference of the first tube.Optionally, the kit further includes an upper flange extending about anouter circumference of the first tube. Optionally, the first flangesubstantially surrounds an outer circumference of the first tube.Optionally, the first tube is located between the fastener apertures.Optionally, the kit further includes a washer configured to attach tothe first flange, the washer comprising a washer opening and the washerhas a width/diameter of at least about 6 inches (e.g., about 6 inches toabout 14 inches). Optionally, the washer comprises a fastener slot andthe fastener slot substantially extends to an outer edge of the washer.Optionally, the kit further comprises two threaded fasteners, thefasteners each having a length of at least about 3 inches. Optionally,the interior of the first tube is hollow. Optionally, the tops of thefirst and second tube each comprise a top aperture.

In one particular embodiment, the system includes: a pool skimmer, thepool skimmer comprising a skimmer interior, a skimmer exterior, askimmer opening leading from the skimmer exterior to the skimmerinterior; a skimmer basket disposed in the pool skimmer interior, theskimmer basket comprising a basket interior, a basket exterior, a floor,a top/rim, a height extending from the floor to the top/rim, a sidewallextending upwardly from the floor, and at least one aperture located inat least one of the basket sidewall and the floor, wherein the basketfloor and the basket sidewall separate the basket interior from thebasket exterior; a first tube located above the skimmer basket, thefirst tube comprising a top, a bottom comprising an opening, a firsttube height extending from the bottom to the top, an interior, anexterior, and a first tube slot configured to feed water from the firsttube exterior to the first tube interior and ultimately the basketinterior, the first tube slot located between the top and the bottom ofthe first tube, the first tube slot having a width perpendicular to thefirst tube height and a height parallel to the first tube height; and adoor adjacent to the first tube, the door configured to movehorizontally relative to the first tube and at least partially cover thefirst tube slot. In some embodiments, the door is a second tube, thesecond tube configured to rotate relative to the first tube and at leastpartially cover the first tube slot, the second tube comprising a top, abottom, a second tube height extending from the bottom to the top, and aslot located between the top and the bottom of the second tube, thesecond tube slot having a width perpendicular to the second tube heightand a height parallel to the second tube height. Optionally, the systemfurther includes a pump in fluid communication with the skimmer basket,a pool and a pool sidewall and the skimmer is attached to, or locatedinside, the basket sidewall.

Preferably the system is used in a method of increasing the velocity ofwater flowing into a skimmer basket that includes a) providing thesystem and b) flowing water and debris through the slot of the secondtube, through the slot of the first tube, into the first tube interior,and into the skimmer basket interior. Optionally, the method furtherincludes rotating the second tube relative to the first tube.Optionally, the method further includes the step of rotating the secondtube relative to the first tube so that the second tube partially coversthe first tube slot, and rotation of the second tube relative to thefirst tube so that the second tube partially covers the first tube slotincreases the velocity of water and debris entering the basket.

In yet another embodiment, the system includes a pool skimmer systemcomprising a pool skimmer, the pool skimmer comprising a skimmerinterior, a skimmer exterior, a skimmer opening leading from the skimmerexterior to the skimmer interior, a skimmer basket well located in theskimmer interior, and a water passageway leading to the skimmer basketwell, the water passageway having a height and a width; a skimmer basketdisposed in the skimmer basket well, the skimmer basket comprising abasket interior, a basket exterior, a floor, a top/rim, a heightextending from the floor to the top/rim a sidewall extending upwardlyfrom the floor, and at least one aperture located in at least one of thebasket sidewall and the floor, wherein the basket floor and the basketsidewall separate the basket interior from the basket exterior; a tubelocated above the skimmer basket, the tube comprising a top, a bottomcomprising an opening, a tube height extending from the bottom to thetop, an interior, an exterior, and a tube slot configured to feed waterfrom the tube exterior to the tube interior and the basket interior, thetube slot located between the top and the bottom of the tube, the tubeslot having a width perpendicular to the tube height and a heightparallel to the tube height, the tube adjacent to the water passageway,the tube configured to rotate relative to the water passageway and atleast partially cover the water passageway. Optionally, the tube isattached to the skimmer basket. Optionally, the system further includesa pump in fluid communication with the skimmer basket, a pool and a poolsidewall and the skimmer is attached to, or located inside, the basketsidewall. Optionally, the water passageway has a width of at least about2 inches and a height of at least about 4 inches. Optionally, the tubeis generally cylindrical. Optionally, the system further includes a weirlocated in the water passageway, the weir movable between a verticalposition in which the weir is parallel to the water passageway heightand a horizontal position in which the weir is parallel to the waterpassageway width.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a front, perspective view of a prior art skimmer andpool sidewall.

FIG. 2 illustrates a cross-sectional view of the prior art skimmer ofFIG. 1, taken along line 2-2 of FIG. 1.

FIG. 3 illustrates a schematic view of water circulating in a clockwisefashion in a swimming pool with a prior art skimmer.

FIG. 4 illustrates a front, perspective, exploded view of a skimmerbasket system of one embodiment of the present invention; in thisembodiment, the first flange of the basket system is removably attachedto the basket by a fastener.

FIG. 5 illustrates a front, perspective view of the assembled basketsystem of FIG. 4.

FIG. 6 illustrates a close-up, perspective view of the circled area ofFIG. 5.

FIG. 7 illustrates a side, elevation view of the assembled basket systemof FIG. 4.

FIG. 8 illustrates a section view of the basket system of FIG. 7, takenalong line 8-8.

FIG. 9 illustrates a front, perspective, exploded view of a skimmerbasket system of another embodiment of the present invention; in thisembodiment the first flange of the basket system is removably attachedto the basket by a fastener and the system further includes a groove andan upper flange to guide the second tube as it slides around the firsttube.

FIG. 10 illustrates a front, perspective view of the assembled basketsystem of FIG. 9.

FIG. 11 illustrates a rear, perspective view of the assembled basketsystem of FIG. 9.

FIG. 12A illustrates a front, perspective view of the first tube of thebasket system of FIG. 9.

FIG. 12B illustrates a front, perspective view of a first tube with asmall lip surrounding the bottom opening.

FIG. 13 illustrates a side, elevation view of the assembled basketsystem of FIG. 9.

FIG. 14 illustrates a section view of the basket system of FIG. 13,taken along line 14-14.

FIG. 15 illustrates a front, perspective, exploded view of a skimmerbasket system of another embodiment of the present invention; in thisembodiment, the first tube includes two ledges that receive bolts toattach the first tube to the skimmer basket.

FIG. 16 illustrates a front, perspective view of the assembled skimmerbasket system of FIG. 15.

FIG. 17 illustrates a close-up, perspective view of the circled area ofFIG. 16.

FIG. 18 illustrates a side, elevation view of the assembled basketsystem of FIG. 16.

FIG. 19 illustrates a section view of the basket system of FIG. 18,taken along line 19-19.

FIG. 20 illustrates a front, perspective, exploded view of a skimmerbasket system of another embodiment of the present invention; in thisembodiment, the first tube includes two posts that receive O-rings toattach the first tube to the skimmer basket handle.

FIG. 21 illustrates a front, perspective view of the assembled basketsystem of FIG. 20.

FIG. 22 illustrates a section view of the basket system of FIG. 21,taken along line 22-22.

FIG. 23 illustrates a front, perspective, exploded view of a skimmerbasket system of another embodiment of the present invention; in thisembodiment, the first flange includes male threads that mate with femalethreads on the interior of the skimmer basket.

FIG. 24 illustrates a front, perspective view of the assembled basketsystem of FIG. 23.

FIG. 25 illustrates a bottom view of the first flange and first tube ofthe basket system of FIG. 23.

FIG. 26 illustrates a front, perspective, exploded view of a skimmerbasket system of another embodiment of the present invention; in thisembodiment, the first flange is attached to the basket via two hinges.

FIG. 27 illustrates a side, elevation view of the assembled basketsystem of FIG. 26.

FIG. 28 illustrates a side, elevation view of the assembled basketsystem of FIG. 26; in FIG. 28, one of the hinge pins has been removed sothat the basket can pivot about the other hinge pin.

FIG. 29 illustrates a front, perspective view of the assembled basketsystem of FIG. 26.

FIG. 30 illustrates a close-up, perspective view of the circled area ofFIG. 29.

FIG. 31 illustrates a front, perspective view of the assembled basketsystem of FIG. 26; in FIG. 31, one of the hinge pins has been removed sothat the basket can pivot about the other hinge pin.

FIG. 32 illustrates a top view of the assembled basket system of FIG.26.

FIG. 33 illustrates a top view of a skimmer with the assembled basketsystem of FIG. 26; in FIG. 33, the top access opening has been removedso that the basket system is visible.

FIG. 34 illustrates a front, perspective view of a skimmer basket systemof another embodiment of the present invention; in this embodiment, thebasket, first flange, and first and second tubes are a single piece.

FIG. 35 illustrates a front, perspective view of a skimmer that includesa tube that is configured to rotate within the skimmer so as to at leastpartially cover the water passageway.

FIG. 36 illustrates a side view of a skimmer that is attached to thesidewall of a swimming pool; the skimmer has a longitudinal slot in thehousing and the skimmer interior has a tube that is configured to rotateto partially cover the longitudinal slot.

DETAILED DESCRIPTION

The present disclosure provides a system 200 for improving a poolskimmer 100. In the drawings, not all reference numbers are included ineach drawing for the sake of clarity. It will be understood thatreferences herein to the singular form of a term encompass plural forms.The system 200 may be used in conjunction with any suitable poolskimmer, and are preferably used with immobile skimmers that are locatedin swimming pool, pond, fountain, or spa sidewalls, such as the skimmer100 illustrated in FIGS. 1-3. As used herein, the term “pool” means aswimming pool, pond, fountain or spa. While, the system 200 may be usedin spas, it will be appreciated that the system 200 is preferably usedin swimming pools, given that spas generally have a small surface areaand collect less debris than pools.

Referring further to the system 200, as shown in FIGS. 4-36 the system200 includes a skimmer basket 160 configured to be placed in theinterior 137 of a pool skimmer 100. The skimmer basket has a basketinterior 167, a basket exterior 168, a floor 161, a top/rim 162, aheight 165 extending from the floor 161 to the top/rim 162, one or moresidewalls 163 extending upwardly from the floor 161, and a plurality ofapertures 164 located in the floor 161 and/or the sidewalls 163. Thebasket floor 161 and the basket sidewall 163 separate the basketinterior 167 from the basket interior 168. In some embodiments, thebasket 160 is generally cylindrical with the diameter of the cylinderdecreasing from the top 162 to the floor 161 (e.g., a slight taper). Insome embodiments, the basket floor 161 is substantially flat. However,the basket 160 can be any other suitable shape, such as rectangular. Insome embodiments, the floor 161 is substantially flat.

The system 200 further includes a first tube 210 that, when the system200 is fully assembled, optionally attaches to the skimmer basket 160and is located above the basket floor 161. The first tube 210 optionallyincludes a wall 211 that forms the first tube 210, a top 214, a bottom216 that includes a bottom opening 217, a first tube height 218extending from the bottom 216 to the top 214, an interior 212, anexterior 213 that includes a first flange 230 extending from the wall211 towards the basket sidewall 163, and a first tube longitudinal slot221. In some embodiments, as shown in FIGS. 4, 5, 9, 10, 12A, 15, 16,20-24, 26, 29, 31, 34, 35, there is no lip surrounding the bottomopening 217 so that the bottom opening 217 extends to the wall 211forming the first tube 210. In other embodiments, as shown in FIG. 12B,a small lip 225 surrounds the bottom opening 217 and the bottom opening217 has a width/diameter 226 of from about 3 to about 4 inches. In use,water and debris from the first tube exterior 213 enters the first tubeinterior 212 through the first tube longitudinal slot 221, flows throughthe bottom opening 217 and enters the basket interior 167. Optionally,the top 214 of the first tube 210 includes a top opening 215 so thatwater and debris may enter the inner tube interior 212 through the topopening 215 when water and debris are located above the top 214 of thefirst tube 210, which may occur when, for example, the water level inthe skimmer 100 is particularly high. The first tube slot 221 preferablyextends substantially the entire height 218 of the first tube 210.Preferably, the first tube height 218 is at least about 4 inches (e.g.,about 4 inches to about 15 inches). Preferably, the first tube slot 221has a width 222 perpendicular to the first tube height 218 and a height224 parallel to the first tube height 218. In some embodiments, thefirst tube slot 221 has a width 222 of at least about 1 inch (morepreferably about 2 to about 5 inches) and a height 224 of at least about1 inch (more preferably about 4 inches to about 15 inches, even morepreferably about 6 inches to about 9 inches). For example, the firsttube slot may have an average width 222 of about 1 inch to about 3.5inches, even more preferably about 1 inch to about 3 inches, and evenmore preferably about 2 inches to about 3 inches). Preferably, the firsttube 210 is generally cylindrical and the first tube 210 has an innerdiameter 255 (measured as the distance between opposing interiorsurfaces of the wall 211) and an outer diameter 254 (measured as thedistance between opposing exterior surfaces of the wall 211) of at leastabout 2 inches (more preferably, about 3 inches to about 9 inches). Insome embodiments, the first tube 210 is generally cylindrical with theinner and outer diameters 254 and 255 of the cylinder graduallyincreasing from the top 214 to the bottom 216 (e.g., a slight taper) tofacilitate injection of the first tube 210 during plastic injectionmolding. The first tube wall 211 may have any desired thickness 258depending on the strength desired and the cost of the material. In someembodiments, the first tube wall thickness 258 is from about 0.05 inchesto about 2 inches. Optionally, the first tube 210 includes a knurledsurface 252 at the top 214 of the first tube 210 for gripping.Preferably, the bottom 290 of the first tube slot 221 is adjacent to(more preferably about co-planar with) the top 231 of the first flange230, as shown in FIGS. 4, 5, 8, 9, 10, 13-16, 18-24, 26, 29, 31 and 34.Preferably, the first tube slot 221 extends from the first flange 230 tothe top 214 of the first tube 210. Preferably, the first tube 210 isimmobile relative to the first flange 230.

In some embodiments, the first flange 230 is configured so that italone, or in combination with a washer 260, inhibits (but does notnecessarily prevents) water and debris from entering the basket 160without first entering the slot 221 of the first tube 210. To accomplishthis, the first flange 230 alone, or the first flange 230 and the washer260, extends to or beyond the sidewall 163 of the basket 160 when thebasket 160 is placed in the well 198 of the skimmer 100. The firstflange 230 and, if included, the first flange 230 and the washer 260,are preferably adjacent to the top 162 of the skimmer basket 160. Thepurpose of the washer 260 is that it may be desirable to provide auniversal basket system 200 that works with a number of different sizedskimmer baskets 160 and the washer 260 allows the system 200 to be usedwith larger skimmer baskets 160 and, in combination with the firstflange 230, the washer 260 substantially creates a seal to force waterand debris into the slot 210. In some embodiments, the length 233 andwidth 256 of the first flange 230 (i.e., the diameter of the firstflange 230 if the first flange 230 is circular) is at least about 4inches (e.g., about 4-10 inches) and the length 261 and width 268 of thewasher 260 (i.e., the diameter of the washer 260 if the washer 260 iscircular) is larger than the length 233 and width 256 of the firstflange 230—e.g., about 6 to about 14 inches—so that the washer 260extends beyond the perimeter of the first flange 230. The first flange230 and washer 260 can be any suitable shape, including generallycircular and generally rectangular, depending on the shape of the basket160. If included, the washer 260 includes a central opening 262 that issubstantially aligned with the bottom hole 217 of the first tube 210such that water and debris flows through the first slot 221, through thebottom hole 217, through the washer hole 262 and into the skimmer basketinterior 167. In some embodiments, the washer hole 262 has awidth/diameter 269 of from about 3 inches to about 6 inches. Ifincluded, the washer 260 may be placed above or below the first flange230. Preferably, the washer 260 is placed below the first flange 230 andthe first tube 210 extends below the first flange 230 to assist in thepositioning of the washer 260, as best seen in FIGS. 19 and 25, 28. Itwill be understood that the first flange 230 and washer 260 inhibit butdo not necessarily prevent water and debris from entering the basketinterior 167 without first entering the slot 221 of the first tube 210because the first flange 230 and washer 260 may each comprise smallfastener apertures 237 and 263 as described below and water and debrismay enter the top opening 215 of the first tube 210 if the water levelin the skimmer 135 is high, as described above.

The purpose of using the first flange 230 alone or in combination withthe washer 260 to inhibit water and debris from entering the basket 160without first entering the slot 221 of the first tube 210 is thatskimmer baskets in the prior art without the system 200 often lack apump with sufficient force to pull debris and water into the skimmerbasket. However, by providing a first tube 210 with the slot 221, thepresent invention is able to take advantage of the Bernoulli principle,which holds that velocity of water increases when water flows through anarrow constriction. Thus, by constricting the flow of the water anddebris into the basket 160 using the first tube slot 221, it has beenobserved that water and debris flows into the basket 160 at a higherrate than without the system 200. It has also been observed thatoffsetting the widthwise center 223 of the slot 221 from the widthwisecenter 136 of the skimmer opening 135 increases the flow of water andthe debris into the basket 160 because the offset requires water anddebris to travel around the first tube 210, like water drawing in atoilet, before entering the slot 221. For example, if the widthwisecenter 136 of the skimmer opening 135 is assigned the 6 o'clockposition, it has been observed that positioning the widthwise center 223of the slot 221 at the 2 o'clock position is optimal in pools 110 thathave a clockwise drain bias in the skimmer 100. See FIG. 33. It would bededuced that positioning the slot 221 at the 10 o'clock position wouldbe optimal in pools 100 that a have clockwise drain bias in the skimmer100. Preferably, the widthwise center 223 of the slot 221 is offset fromthe widthwise center 136 of the skimmer opening 135 by at least about 30degrees (e.g., about 30 degrees to about 330 degrees—i.e., between the 7o'clock and 5 o'clock positions if the widthwise center 136 of theskimmer opening 135 is assigned the 6 o'clock position).

The system 200 further includes a door configured to move horizontallyand partially cover the first tube longitudinal slot 221. In someembodiments, the door is a second tube 270 adjacent to the first tube210 and rotatable relative to the first tube 210. The second tube 270includes a wall 276 that forms the second tube 270, an interior 281, anexterior 282, a top 271, a bottom 274 that includes a bottom opening273, a second tube height 275 extending from the top 271 to the bottom274, and a second tube longitudinal slot 283 located between the top 271and the bottom 274 of the second tube 270. Preferably, the second tubeslot 283 has a width 285 perpendicular to the second tube height 275 anda height 284 parallel to the second tube height 275. Preferably, the top271 includes a top opening 272. A function of the second tube 270 isthat the second tube 270 can be rotated relative to the first tube 210to partially cover the first tube slot 221 to increase the velocity ofwater and debris flowing into the skimmer basket 160 and anotherfunction is that the second tube 270 can be rotated relative to thefirst tube 210 to close the first tube slot 221 when a user desires toremove the system 200 from the skimmer interior 137 in order to removedebris from the first tube 210 and the skimmer basket 160 (i.e., emptythe first tube 210 and the skimmer basket 160). It has been observedthat the velocity of water entering skimmer baskets 160 varies dependingon pump 190 horsepower and whether the pump 190 has been recentlycleaned. Thus, the second tube 270 allows a pool owner to rotate thesecond tube 270 relative to the first tube 210 to partially cover thefirst tube slot 221 when the owner has a weak pump 190 and/or a pumpsystem that has not been recently cleaned (so as to increase thevelocity of water and debris entering the skimmer basket 160) and toleave the first tube slot 221 uncovered (i.e., leaving the first andsecond tube slots 221 and 283 aligned, as shown in FIGS. 5, 10, 16, 21,24, 29, 31 and 34) when the owner has a strong pump 190 and/or a pumpsystem that has been recently cleaned. Preferably, the second tube 271has one or more apertures 280 opposite the second tube slot 283, whichsaves material cost, provides flexibility to the second tube 270, andallows the manufacturer to include graphics such as the product's name,as shown in FIG. 11. In some embodiments, the second tube slot 283 has awidth 285 of at least about 1 inch (more preferably about 2 to about 5inches) and a height 284 of at least about 1 inch (more preferably about4 inches to about 15 inches). Preferably, the second tube slot 283 hasthe same size and shape as the first tube slot 221. Preferably, thesecond tube 270 is generally cylindrical and the second tube 270 has aninner diameter 277 (measured as the distance between opposing interiorsurfaces of the wall 276) and an outer diameter 278 (measured as thedistance between opposing exterior surfaces of the wall 276).Preferably, the second tube inner diameter 277 is between 100 and 110%of the size of the first tube outer diameter 254 so that the second tube270 hugs the first tube 210. In other words, preferably the connectionis tight enough so that both tubes 210 and 270 move vertically when auser lifts the system 200 out of the skimmer 100 to empty the basket 160but the user is able to rotate the second tube 270 relative to the firsttube 210 to open and close the slot 221. In some embodiments, the secondtube inner diameter 277 and the second tube outer diameter 278 are atleast about 2 inches (more preferably, about 3 inches to about 9inches). Preferably, if the first tube 210 is tapered, as describedabove, the second tube 270 has a similar taper. The second tube wall 276may have any desired thickness 286 depending on the strength desired andthe cost of the material. In some embodiments, the second tube wallthickness 286 is from about 0.05 inches to about 2 inches. In someembodiments, as shown in FIGS. 9, 10, and 12, the top surface 231 of thefirst flange 230 includes a groove 235 that extends around a perimeter219 of the first tube 210 (more particularly, the circumference of thefirst tube 210 if the first tube 210 is cylindrical) to create a trackfor the second tube 270. In some embodiments, the width 236 of the firstflange groove 235 is from about 100% to about 120% of the second tubewall thickness 286 so that the bottom 274 of the second tube 270 fitssnugly in the groove 235. In some embodiments, as shown in FIGS. 10, 11,13 and 14, the first tube 210 includes an upper flange 220 and thesecond tube is located between the first flange 230 and the upper flange220. In such embodiments, the first tube height 218 is greater than thesecond tube height 275. Optionally, the second tube 270 includes aplurality of protrusions/ears 310 located at the top of the second tube270 to make it easier for a user to rotate the second tube 270.

In some embodiments, the first tube 210 is located inside the secondtube interior 281, as shown in FIGS. 5, 7, 8, 10, 11, 13, 14, 16, 18,19, 21, 22, 24, 27, 28, 29, and 31-34. In such embodiments, the innerdiameter 255 of the first tube 210 is different than the inner diameter277 of the second tube 270 and the outer diameter 254 of the first tube210 is different than the outer diameter 278 of the second tube 270.Preferably, the first tube interior 212 is hollow. In other embodiments,the second tube 270 is located in the first tube interior 212.

Preferably, the first tube 210, the second tube 270, the washer 260 andthe first flange 230 are comprised of plastic.

In some embodiments, the first flange 230 and the skimmer basket 160 arepermanently attached to one another and the first and second tubes 210and 270, first flange 230, and skimmer basket 160 are a single piece ofplastic, as shown in FIG. 34.

In other embodiments, the first flange 230 and the skimmer basket 160are mechanically attached to one another. For example, the system 200may include two hinge pins 250 and two hinges 249 so that the basket 160can pivot relative to the first flange 230 upon removal of one of thehinge pins 250, as shown in FIGS. 26-33. In other embodiments, as shownin FIGS. 23-25, the first flange 230 and the inner rim of the basket 160include mating threads 245 and 246 so that the first flange 230 canremovably attach to the basket 160. In such embodiments, the washer 260may include threads 266 that mate with threads 246 located in the innerrim of the basket 160 and the bottom surface 232 of the first flange 230may include one or more protrusions 264 that mate with and lock intoapertures 263 in the washer 260 so that the washer 260 is removablyattached to the first flange 230. In some embodiments, the first flange230 and the skimmer basket 160 may be removably attached by a fastener238. In some such embodiments, as shown in FIGS. 4-19, the fastener 238includes a series of bolts 239, washers 242, and nuts 243. In someembodiments, the bolt 239 includes threads 240 and the bolt 239 passesthrough the apertures 164 located in the floor 161 of the basket 160.Preferably, the bolt 239 has a length 241 of at least 3 inches (e.g.,about 3 to about 12 inches). Preferably, the top end 257 of the bolt 239passes through one or more fastener apertures 237 located in the firstflange 230 and one or more fastener apertures 263 located in the washer260. Preferably, the washer fastener apertures 263 substantially extendto the outer edge 265 of the washer 260 and the first flange fastenerapertures 237 substantially extend to the outer edge 244 of the firstflange 230 which makes the system 200 easy to assemble. Alternatively,instead of a bolt 239, the system 200 may include a threaded rod thathas a nut 243 and washer 242 at each end. In other embodiments, theinterior 212 of the first tube 210 includes a ledge 253 and the top end257 of the bolt 239 passes through an aperture located in the ledge 253,as seen in FIGS. 15-19. It has been observed that a stainless steelthreaded rod or bolt 239 having 4-40 thread is particularly well-suitedfor use with the present system 200. In other embodiments, instead of abolt 239 or threaded rod, the fastener 218 may be an O-ring 248 thatattaches to a post 247 located in the first tube interior 212, as shownin FIGS. 20-22.

Preferably the system 200 is used in a method of increasing the velocityof water flowing into a skimmer basket 160 that includes providing thesystem 200, placing the basket 160 in the well 198 of a skimmer 100, andflowing water and debris through the slot 221 of the first tube 210 andinto the skimmer basket 160. Optionally, the method further includesrotating the second tube 270 relative to the first tube 210. Optionally,the method further includes the step of rotating the second tube 270relative to the first tube 210 so that the second tube 270 partiallycovers the first tube slot 221, and this rotation of the second tube 270relative to the first tube 210 so that the second tube 270 partiallycovers the first tube slot 221 increases the velocity of water anddebris entering the basket 160.

In some embodiments, as shown in FIG. 35, the system 200 does notinclude a discrete first tube 210 but instead the housing 300 of theskimmer 100 acts as the first tube 210. More particularly, as shown inFIG. 35, the system 200 includes a pool skimmer 100 that has a skimmerinterior 137, a skimmer exterior 138, a skimmer opening 135 leading fromthe skimmer exterior 138 to the skimmer interior 137, a skimmer basket160 located in a well 198 of the skimmer interior 137, and a waterpassageway 196 leading from the skimmer opening 135 to the skimmerbasket well 198, the water passageway 196 having a height 139 and awidth 140, a second tube 270 located above the skimmer basket 160, thesecond tube 270 comprising a top 271, a bottom 274 comprising an opening273, a second tube height 275 extending from the bottom 274 to the top271, an interior 281, an exterior 282, and a second tube slot 283configured to feed water from the second tube exterior 282 to the secondtube interior 281 and the basket interior 167, the second tube slot 283located between the top 271 and the bottom 274 of the second tube 270,the second tube slot 283 having a width 285 perpendicular to the secondtube height 275 and a height 284 parallel to the second tube height 275,the second tube 270 adjacent to the water passageway 196, the secondtube 270 configured to rotate relative to the water passageway 196 andat least partially cover the water passageway 196. Optionally, theskimmer 100 further includes a weir 170.

FIG. 36 shows a variation of the system of FIG. 35. In FIG. 36, theskimmer 100 is attached to the pool wall 120 via an arm 320, and a pipe180 feeds water that is filtered by the skimmer basket 160 to the pump190. In such an embodiment, the water passageway 196 and the skimmeropening 135 are the same—meaning that there is there is no channelbetween the basket well 198 and skimmer opening 135. Skimmers 100attached to the pool sidewall 120 are known in the art and include theINTEX Deluxe Wall Mount Swimming Pool Surface Skimmer. However, it isbelieved that previously known wall-mounted skimmers lack a slot 135 toincrease the velocity of water entering the basket 160 as well as a door(in this case second tube 270) which can be used to partially cover theslot 135 to further increase the flow of water entering basket 160.

Terms of degree such as “substantially”, “about” and “approximately” asused herein mean a reasonable amount of deviation of the modified termsuch that the end result is not significantly changed. For example,these terms can be construed as including a deviation of at least ±5% ofthe modified term if this deviation would not negate the meaning of theword it modifies.

Having now described the invention in accordance with the requirementsof the patent statutes, those skilled in the art will understand how tomake changes and modifications to the disclosed embodiments to meettheir specific requirements or conditions. Changes and modifications maybe made without departing from the scope and spirit of the invention, asdefined and limited solely by the following claims

What is claimed is:
 1. A method of filtering water in a swimming poolcomprising: a) providing a swimming pool comprising water; b) providinga pump in fluid communication with the swimming pool; c) providing abasket in fluid communication with the pump and upstream from the pump,the basket comprising a basket interior, a basket exterior, a floor, atop, a height extending from the floor to the top, a sidewall extendingupwardly from the floor, and a plurality of apertures located in atleast one of the basket sidewall and the floor, wherein the basket floorand the basket sidewall separate the basket interior from the basketexterior, wherein a tube is removably attached to the basket, the tubecomprising a top located above the basket, a bottom comprising a bottomopening in fluid communication with the basket interior, a tube heightextending from the bottom to the top, an interior, an exterior, and atube slot configured to feed water from the tube exterior to the tubeinterior and the basket interior, the tube slot located between the topand the bottom of the tube, the tube slot having a width perpendicularto the tube height and a height parallel to the tube height, wherein thetube slot has an average width of at least 1 inch and a height of atleast 1 inch, wherein the tube is generally cylindrical in shape andcomprises an outer diameter of from about 3 inches to about 9 inches,wherein the tube top is open and in fluid communication with the tubeinterior, and further wherein the tube slot comprises a tube slot toplocated below the tube top; and d) flowing water through the tube slot,into the basket interior, and into the pump.
 2. The method of claim 1,wherein the bottom of the tube comprises no lip surrounding said bottomopening.
 3. The method of claim 1, wherein the tube comprises a tube rimsurrounding the tube top.
 4. The method of claim 3 wherein the tube slottop is located adjacent to and below the tube rim.
 5. The method ofclaim 1 wherein the tube slot comprises a tube slot bottom located abovethe basket top.
 6. The method of claim 1, wherein the tube comprises atube upper flange forming the tube rim.
 7. The method of claim 6,wherein the system further comprises a generally circular tube lowerflange surrounding the tube exterior and located below the tube upperflange.
 8. The method of claim 1, wherein the tube height is at leastabout 4 inches.
 9. The method of claim 1 wherein the tube slot creates avortex as the water passes through the tube slot due to the Bernoulliprinciple.
 10. The method of claim 1 wherein the swimming pool furthercomprises a swimming pool basin defined by at least one pool sidewalland the basket is located in the basin.
 11. The method of claim 10wherein the method further comprises connecting a pipe to the basket andflowing water from the basket through the pipe and into the pump.